Glenn Greenberg acquired 31.1 Thousand Comcast Corp shares worth $1.25 Million. That's 0.03% of their equity portfolio (18th largest holding). The investor owns Inf% of the outstanding Comcast Corp stock. The first Comcast Corp trade was made in Q2 2007. Since then Glenn Greenberg bought shares five more times and sold shares on five occasions. The stake costed the investor $759 Thousand, netting the investor a gain of 65% so far.